关键词: 综合交通运输, 应急救援, 双层规划, 安全路径, 疏散连通度

Abstract:

Effective traffic evacuation strategies are critically important for reducing the post- earthquake loss. By defining the road network evacuation connectivity and safety driving path, the problem of emergency evacuation and path selection under the uncertainty information conditions are described. Taking refuge point distribution, path planning, vehicle capacity and uncertain traffic capacity as the constraints of the problem, a model of emergency rescue vehicle routing based on the evacuation of public transit is established. Taking into the limitations of the simulation, the model is transformed into the public transit equilibrium scheduling problem under the same departure interval when the algorithm designed. Based on the Tangshan road network and population distribution, the simplified model is simulated. The results show that selecting security rescue path under uncertain information, when the rescue vehicles block on the way, they only need to adjust the turning strategy, which can ensure the vehicles smoothly pass, and ensure the stability of the rescue and scheduling work.

Key words: integrated transportation, emergency rescue, bi- level designing, safety path, evacuation connectivity